Example builder:

https://build.chromium.org/p/tryserver.chromium.linux/builders/chromeos_amd64-generic_chromium_compile_only_ng?numbuilds=100

Error:

FAILED: obj/ui/gl/init/init/gl_factory_ozone.o [snip...]
In file included from ../../third_party/swiftshader/include/EGL/egl.h:39:0,
                 from ../../ui/gl/gl_bindings.h:23,
                 from ../../ui/gl/gl_egl_api_implementation.h:12,
                 from ../../ui/gl/init/gl_factory_ozone.cc:13:
../../third_party/swiftshader/include/EGL/eglplatform.h:99:22: fatal error: X11/Xlib.h: No such file or directory
 #include <X11/Xlib.h>
                      ^
compilation terminated.


Only assigning to kylechar@ because rjkroege@ mentioned a recent change to ozone/GL stuff.

See also issue 635702